Telephone-bell damper.



S. ACOPIAN.

TELEPHONE BELL DAMPER.

APPLICATION FILED OCT- 26, l9l7- RENEWED JAN. 29.1919.

1,297,982. Patented Mar. 25,1919.

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fie gal/ UNITED STATES PATENT OFFICE.

soomm acornuv, or noniranan, oo'nnnc, camera. I TELEPHONE-BELL DAMPER.

Specification of Letters Patent. Patented Mar. 25, 1919'.

Application fled October 28, 1917, Serial 110. 188,569. lBenewed January 29, 1919. Serial No. 278,881;

To all whom it may concern:

Be it known that I, Sooner: ACOPIAN, a citizen of Russia, resident of Montreal,

Province of Quebec, and Dominion of Canad'a, have invented certain new and useful Improvements in Telephone-Bell Dampers, of which the following is a specification.

This invention relates to improvements in means for reducing the sound produced by bells, particularly those used in connection with telephonic instruments.

A special object of the invention is to provide a device which may be readily applied to the telephone box on which the bells are mounted and which may be so adjusted as to produce any desired volume of sound from the bells.

These and other like objects are attained by the novel construction and combination of parts hereinafter described and'shown in the accompanying drawings, forming a material part of this specification, and in which Figure 1 is a fragmental front view indicating the application of the invention.

Fig. 2 is a ont view of the same.

Fig. 3 is a transverse sectional, view taken on line'33 of Fig. 1, and

Fig. 4 is a fragmental vertical sectional view showing a modified form of spring tensioning means.

In the drawing the telephone box 10,is shown to have a door 11, engaged by hinges 12 and provided with a lock 13. On some portion of the box, as at 14, is secured a foot 15, by the screw 16, and integrally formed I with the foot is a vertical standard 17 bent to form a horizontal bar 18, from the outer end of which extend oppositely disposed transverse arms 20, which reach partially over the bells 22, secured by posts 23 to the box in the usual manner.

Engaged on the lower side of the arms 20, near their ends, are the upper convolutions of the spiral helical springs 25, while at the lower ends of the springs are secured damper disks 26, adapted to make contact with the exterior of the bells 22, under pressure of the springs 25. These dampers are preferably made of leather, rubber or' some relatively soft, pliable material.-

ing the sound In order to adjust the tension of the springs 25, a post 28, is secured in the plate 14, its upper end 29, being screw-threaded and engaged in a knurled nut 30, set in the bar 18 in such manner that as the nut is screwed down, the bar is deflected, causing increased tension upon the springs 25, tending to press the dampers 26 as tightly as may be desired upon the bells, thereby decreasproduced by them.

Obviously, sion of the springs may be relaxed, or, in fact withdrawn so that contact does exist between the dampers and the bells if it be desired that the latter full sound.

In Fig. 4 a modification of the tensioning device is shown in which a footing 40. is secured to the support 14 and hasextending a vertical screw-threaded stem 41 engaging in a threaded opening in a spindle 42, having a corrugated flanged disk 43, by means of which the spindle may be turned, the upper end of the spindle extending through give forth their by raising the nut 30, the ten the bar 18, and formed with a head 44 so that it may rotate freely within the bar; this form permitting of ready adjustment and presenting a neater appearance.

From the foregoing it will be seen that an efi'ective device has been produced which will effectually control the sound produced by the bells and that the same may be ap- 7plied without detriment to the telephone ox. I

-Having thus described my invention what claim as new and desire to secure by Letters Patent, is:-

1. Ina bell dampener, the combination with a bell and a support therefor, of a standard secured to said support, said standard having a horizontal arm extending over said bell, a spring carried at-the end of said arm, a pliable disk secured to said spring ma 'ng contact with the exterior of said bell, and means of producing a desired tension in said spring whereby the dampening effect may be adjusted.

2. In a telephone bell dampen-er. the combination with a support, and a pair of bells mounted thereon, of a standard secured vertically to said support, a horizontal element formefl with said stumierd, arms on seic'i horizontal elemem emeniine" over said bells, a coiled spring securetl at the end of each of said arms, pliable disk secured at the 0ppcsi'ize ends 0f said springs; a, rod mounted izlgsaid sup corb said ICd extending "through said horizon-tel element, and 2, nut flied no said rod and adaptefi to engage with said horizontal element whereby the semen of said springs may be adjusted.

In testimony whereof I have ,affixed my sigma iaure. 

